In One Interaction, a Bird Feeds on the Seeds of a Specific

question 49

Multiple Choice

In one interaction, a bird feeds on the seeds of a specific plant. Some of the seeds are digested, while others pass unharmed through its digestive tract and are deposited in new locations. In a second interaction, a bird digests all of the seeds from the plant and therefore, none of the seeds are dispersed. The plant is not damaged because the number of seeds eaten is relatively small. Which term best describes both of these interactions?

• A) Symbiosis
• B) Facilitation
• C) Mutualism
• D) Commensalism

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Definitions:

Compensating Variation

A measure of the amount of money needed to compensate an individual for a change in welfare or utility, keeping utility constant.

Pairs

Two things that are designed to be used together or are similar in nature, often considered as a unit.

Demand Function

A mathematical equation that describes the quantity of a good or service demanded at various prices.

Consumer's Surplus

The difference between the total amount that consumers are willing and able to pay for a good or service and the total amount they actually pay.